[hibernate-issues] [JIRA] (HHH-16586) When merging a persisted entity with a null Version, Hibernate treats entity as transient instead of throwing

Matthieu Rickly ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiN2I4YWI3Mjg4... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16586?atlOrigin=eyJpIjoiN2I4YW... ) HHH-16586 ( https://hibernate.atlassian.net/browse/HHH-16586?atlOrigin=eyJpIjoiN2I4YW... ) When merging a persisted entity with a null Version, Hibernate treats entity as transient instead of throwing ( https://hibernate.atlassian.net/browse/HHH-16586?atlOrigin=eyJpIjoiN2I4YW... ) Change By: Matthieu Rickly ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) h1. Observed behaviour * Entity has a Version field of type null. * New instance gets persisted. * Instance is modified and merge is attempted with a null version field. * Hibernate does not complain about missing version. Instead the entity is treated as transient, although it exists in the database , leading to unexpected results. h1. Expected behaviour * When attempting to merge a persisted and detached entity with a null version, Hibernate either throws an exception or fetches the latest version from the database. ( https://hibernate.atlassian.net/browse/HHH-16586#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16586#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100225- sha1:4a1ccf9 )